Assuming the reactions to be balanced, select the incorrect option from the following:

A l + N a O H + H_{2} O \to N a [A l (O H)_{4}] + H_{2}

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N a_{2} B_{4} O_{7} + H C l + H_{2} O \to N a C l + N a B O_{2} + N a O H

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B_{2} H_{6} + N H_{3} Δ - \to B_{3} N_{3} H_{6} + H_{2}

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N a_{2} B_{4} O_{7} + H_{2} O \to N a O H + H_{3} B O_{3}

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Solution

The correct option is B $N a_{2} B_{4} O_{7} + H C l + H_{2} O \to N a C l + N a B O_{2} + N a O H$
The incorrect reaction is (b).
$N a_{2} B_{4} O_{7} + 2 H C l + 5 H_{2} O \to 2 N a C l + 4 H_{3} B O_{3}$

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